docs: def get_raise_description_indexes(self, data, prev=None):
          """Get from a docstring the next raise's description.
          In javadoc style it is after @param.
  
          :param data: string to parse
          :param prev: index after the param element name (Default value = None)
          :returns: start and end indexes of found element else (-1, -1)
          :rtype: tuple
  
          """
          start, end = -1, -1
          if not prev:
              _, prev = self.get_raise_indexes(data)
          if prev < 0:
              return -1, -1
          m = re.match(r'\W*(\w+)', data[prev:])
          if m:
              first = m.group(1)
              start = data[prev:].find(first)
              if start >= 0:
                  start += prev
                  if self.style['in'] in self.tagstyles + ['unknown']:
                      end = self.get_elem_index(data[start:])
                      if end >= 0:
                          end += start
                  if self.style['in'] in ['params', 'unknown'] and end == -1:
                      p1, _ = self.get_raise_indexes(data[start:])
                      if p1 >= 0:
                          end = p1
                      else:
                          end = len(data)
  
          return start, end